glibc/sysdeps/pthread/tst-cancel20.c

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/* Copyright (C) 2003-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static int fd[4];
static pthread_barrier_t b;
volatile int in_sh_body;
unsigned long cleanups;
static void
cl (void *arg)
{
cleanups = (cleanups << 4) | (long) arg;
}
static void __attribute__((noinline))
sh_body (void)
{
char c;
pthread_cleanup_push (cl, (void *) 1L);
in_sh_body = 1;
if (read (fd[2], &c, 1) == 1)
{
puts ("read succeeded");
exit (1);
}
pthread_cleanup_pop (0);
}
static void
sh (int sig)
{
pthread_cleanup_push (cl, (void *) 2L);
sh_body ();
in_sh_body = 0;
pthread_cleanup_pop (0);
}
static void __attribute__((noinline))
tf_body (void)
{
char c;
pthread_cleanup_push (cl, (void *) 3L);
int r = pthread_barrier_wait (&b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child thread: barrier_wait failed");
exit (1);
}
if (read (fd[0], &c, 1) == 1)
{
puts ("read succeeded");
exit (1);
}
pthread_cleanup_pop (0);
}
static void *
tf (void *arg)
{
pthread_cleanup_push (cl, (void *) 4L);
tf_body ();
pthread_cleanup_pop (0);
return NULL;
}
static int
do_one_test (void)
{
in_sh_body = 0;
cleanups = 0;
if (pipe (fd) != 0 || pipe (fd + 2) != 0)
{
puts ("pipe failed");
return 1;
}
pthread_t th;
if (pthread_create (&th, NULL, tf, NULL) != 0)
{
puts ("create failed");
return 1;
}
int r = pthread_barrier_wait (&b);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("parent thread: barrier_wait failed");
return 1;
}
sleep (1);
r = pthread_kill (th, SIGHUP);
if (r)
{
errno = r;
printf ("pthread_kill failed %m\n");
return 1;
}
while (in_sh_body == 0)
sleep (1);
if (pthread_cancel (th) != 0)
{
puts ("cancel failed");
return 1;
}
void *ret;
if (pthread_join (th, &ret) != 0)
{
puts ("join failed");
return 1;
}
if (ret != PTHREAD_CANCELED)
{
puts ("result is wrong");
return 1;
}
if (cleanups != 0x1234L)
{
printf ("called cleanups %lx\n", cleanups);
return 1;
}
/* The pipe closing must be issued after the cancellation handling to avoid
a race condition where the cancellation runs after both pipe ends are
closed. In this case the read syscall returns EOF and the cancellation
must not act. */
close (fd[0]);
close (fd[1]);
close (fd[2]);
close (fd[3]);
return 0;
}
static int
do_test (void)
{
stack_t ss;
ss.ss_sp = malloc (2 * SIGSTKSZ);
if (ss.ss_sp == NULL)
{
puts ("failed to allocate alternate stack");
return 1;
}
ss.ss_flags = 0;
ss.ss_size = 2 * SIGSTKSZ;
if (sigaltstack (&ss, NULL) < 0)
{
printf ("sigaltstack failed %m\n");
return 1;
}
if (pthread_barrier_init (&b, NULL, 2) != 0)
{
puts ("barrier_init failed");
return 1;
}
struct sigaction sa;
sa.sa_handler = sh;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction (SIGHUP, &sa, NULL) != 0)
{
puts ("sigaction failed");
return 1;
}
puts ("sa_flags = 0 test");
if (do_one_test ())
return 1;
sa.sa_handler = sh;
sigemptyset (&sa.sa_mask);
sa.sa_flags = SA_ONSTACK;
if (sigaction (SIGHUP, &sa, NULL) != 0)
{
puts ("sigaction failed");
return 1;
}
puts ("sa_flags = SA_ONSTACK test");
if (do_one_test ())
return 1;
#ifdef SA_SIGINFO
sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
sigemptyset (&sa.sa_mask);
sa.sa_flags = SA_SIGINFO;
if (sigaction (SIGHUP, &sa, NULL) != 0)
{
puts ("sigaction failed");
return 1;
}
puts ("sa_flags = SA_SIGINFO test");
if (do_one_test ())
return 1;
sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
sigemptyset (&sa.sa_mask);
sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
if (sigaction (SIGHUP, &sa, NULL) != 0)
{
puts ("sigaction failed");
return 1;
}
puts ("sa_flags = SA_SIGINFO|SA_ONSTACK test");
if (do_one_test ())
return 1;
#endif
return 0;
}
#define TIMEOUT 40
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"